Home / 28,360.40-39,139.61-16,423.95

Finding the Fourth Proportional to 28,360.40, 39,139.61 and 16,423.95

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Solution

The fourth proportional to 28,360.40, 39,139.61 and 16,423.95 is: 22,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,360.40 : 39,139.61 = 16,423.95 : x
  2. Step 2: Convert to fraction form
    28,360.40/39,139.61 = 16,423.95/x
  3. Step 3: Cross multiply
    28,360.40x = 39,139.61 × 16,423.95
  4. Step 4: Simplify right side
    28,360.40x = 642,826,997.66
  5. Step 5: Solve for x
    x = 642,826,997.66/28,360.40
  6. Step 6: Final answer
    x = 22,666.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.